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Name: The president of a university believes the entering class this year ha
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Description: The president of a university believes the entering class this year has an average ACT score different than previous years. The average ACT score previously had been 23. He took a sample of 100 students from this year’s entering class and found the

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The president of a university believes the entering class this year has an average ACT score different than previous years. The average ACT score previously had been 23. He took a sample of 100 students from this year’s entering class and found their sample mean ACT score is 24 with a sample standard deviation of 6. Is there evidence the population mean ACT score is different from 23 at the 0.01 significance level?

State the null and alternative hypotheses.

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